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CT health screening can identify diabetes risk

August 6, 2024
in Medicine
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CT health screening can identify diabetes risk
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OAK BROOK, Ill. – Analysis of CT scans in people who undergo imaging for health screening can identify individuals at risk of type 2 diabetes, according to a study published today in Radiology, a journal of the Radiological Society of North America (RSNA). Researchers said the findings underscore CT’s value in opportunistic imaging—the use of information from routine imaging examinations to learn more about a patient’s overall health.

OAK BROOK, Ill. – Analysis of CT scans in people who undergo imaging for health screening can identify individuals at risk of type 2 diabetes, according to a study published today in Radiology, a journal of the Radiological Society of North America (RSNA). Researchers said the findings underscore CT’s value in opportunistic imaging—the use of information from routine imaging examinations to learn more about a patient’s overall health.

For the new study, researchers evaluated the ability of automated CT-derived markers to predict diabetes and associated conditions.

“Given the significant burden of diabetes and its complications, we aimed to explore whether automated and precise imaging analyses could enhance early detection and risk stratification beyond conventional methods,” said study senior author Seungho Ryu, M.D., Ph.D., from the Kangbuk Samsung Hospital at Sungkyunkwan University School of Medicine in Seoul, South Korea.

The study group included 32,166 adults ages 25 years or older who underwent health screening with 18F-fluorodeoxyglucose (18F-FDG) PET/CT.

Dr. Ryu and colleagues used clinically validated deep learning algorithms to analyze the CT images. The algorithms enabled 3D segmentation and quantification of various body components such as visceral fat, subcutaneous fat, muscle mass, liver density and aortic calcium.

Diabetes prevalence was 6% at baseline and incidence was 9% during the 7.3-year median follow-up.

Automated multiorgan CT analysis identified individuals at high risk of diabetes and associated conditions. The index of visceral fat—the belly fat under the muscles and around the organs of the abdomen—showed the highest predictive performance for diabetes. Combining visceral fat, muscle area, liver fat fraction and aortic calcification improved predictive performance. CT-derived markers also identified ultrasound-diagnosed fatty liver, coronary artery calcium scores of more than 100, osteoporosis and age-related muscle loss called sarcopenia.

These markers outperformed traditional risk factors in predicting type 2 diabetes.

“The results are encouraging as they demonstrate the potential of expanding the role of CT imaging from conventional disease diagnosis to opportunistic proactive screening,” Dr. Ryu said. “This automated CT analysis improves risk prediction and early intervention strategies for diabetes and related health issues.”

In the clinical setting, these CT-derived markers have the potential to improve the conventional approach to diabetes screening and risk assessment, Dr. Ryu noted.

“By integrating these advanced imaging techniques into opportunistic health screenings, clinicians can identify individuals at high risk for diabetes and its complications more accurately and earlier than the current approach,” he said. “This could lead to more personalized and timely interventions, ultimately improving patient outcomes.”

###

“Automated Comprehensive CT Assessment of the Risk of Diabetes and Associated Cardiometabolic Conditions.” Collaborating with Dr. Ryu were Yoosoo Chang, M.D., Ph.D., Soon Ho Yoon, M.D., Ph.D., Ria Kwon, Ph.D., Jeonggyu Kang, M.D., Young Hwan Kim, M.D., Ph.D., Jong-Min Kim, Ph.D., Han-Jae Chung, Ph.Dc., JunHyeok Choi, Ph.Dc., Hyun-Suk Jung, MD, Ph.D., Ga-Young Lim, Ph.D., Jiin Ahn, M.S.P.H., Sarah H. Wild, M.B., B.Chir., Ph.D., and Christopher D. Byrne, M.B.B.Ch., Ph.D.

Radiology is edited by Linda Moy, M.D., New York University, New York, N.Y., and owned and published by the Radiological Society of North America, Inc. (https://pubs.rsna.org/journal/radiology)

RSNA is an association of radiologists, radiation oncologists, medical physicists and related scientists promoting excellence in patient care and health care delivery through education, research and technologic innovation. The Society is based in Oak Brook, Illinois. (RSNA.org)

For patient-friendly information on CT, visit RadiologyInfo.org.



Journal

Radiology

Subject of Research

People

Article Title

Automated Comprehensive CT Assessment of the Risk of Diabetes and Associated Cardiometabolic Conditions

Article Publication Date

6-Aug-2024

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